aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd_alias.c4
-rw-r--r--drivers/s390/block/dasd_devmap.c16
-rw-r--r--drivers/s390/block/dasd_eckd.c147
-rw-r--r--drivers/s390/block/dasd_eckd.h184
-rw-r--r--drivers/s390/block/dasd_int.h1
5 files changed, 189 insertions, 163 deletions
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 2d8df0b3053..20676cdef4a 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -91,7 +91,8 @@ static struct alias_pav_group *_find_group(struct alias_lcu *lcu,
else
search_unit_addr = uid->base_unit_addr;
list_for_each_entry(pos, &lcu->grouplist, group) {
- if (pos->uid.base_unit_addr == search_unit_addr)
+ if (pos->uid.base_unit_addr == search_unit_addr &&
+ !strncmp(pos->uid.vduit, uid->vduit, sizeof(uid->vduit)))
return pos;
};
return NULL;
@@ -332,6 +333,7 @@ static int _add_device_to_lcu(struct alias_lcu *lcu,
group->uid.base_unit_addr = uid->real_unit_addr;
else
group->uid.base_unit_addr = uid->base_unit_addr;
+ memcpy(group->uid.vduit, uid->vduit, sizeof(uid->vduit));
INIT_LIST_HEAD(&group->group);
INIT_LIST_HEAD(&group->baselist);
INIT_LIST_HEAD(&group->aliaslist);
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index d774e79476f..cd3335c1c30 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -913,7 +913,8 @@ dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
#define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 +\
- /* SSID */ 4 + 1 + /* unit addr */ 2 + 1)
+ /* SSID */ 4 + 1 + /* unit addr */ 2 + 1 +\
+ /* vduit */ 32 + 1)
static ssize_t
dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -945,8 +946,17 @@ dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
sprintf(ua_string, "%02x", uid->real_unit_addr);
break;
}
- snprintf(uid_string, sizeof(uid_string), "%s.%s.%04x.%s",
- uid->vendor, uid->serial, uid->ssid, ua_string);
+ if (strlen(uid->vduit) > 0)
+ snprintf(uid_string, sizeof(uid_string),
+ "%s.%s.%04x.%s.%s",
+ uid->vendor, uid->serial,
+ uid->ssid, ua_string,
+ uid->vduit);
+ else
+ snprintf(uid_string, sizeof(uid_string),
+ "%s.%s.%04x.%s",
+ uid->vendor, uid->serial,
+ uid->ssid, ua_string);
spin_unlock(&dasd_devmap_lock);
return snprintf(buf, PAGE_SIZE, "%s\n", uid_string);
}
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 3590fdb5b2f..773b3fe275b 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -313,8 +313,8 @@ static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, int trk,
memset(pfxdata, 0, sizeof(*pfxdata));
/* prefix data */
pfxdata->format = 0;
- pfxdata->base_address = basepriv->conf_data.ned1.unit_addr;
- pfxdata->base_lss = basepriv->conf_data.ned1.ID;
+ pfxdata->base_address = basepriv->ned->unit_addr;
+ pfxdata->base_lss = basepriv->ned->ID;
pfxdata->validity.define_extend = 1;
/* private uid is kept up to date, conf_data may be outdated */
@@ -536,36 +536,40 @@ dasd_eckd_cdl_reclen(int recid)
/*
* Generate device unique id that specifies the physical device.
*/
-static int
-dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
+static int dasd_eckd_generate_uid(struct dasd_device *device,
+ struct dasd_uid *uid)
{
struct dasd_eckd_private *private;
- struct dasd_eckd_confdata *confdata;
+ int count;
private = (struct dasd_eckd_private *) device->private;
if (!private)
return -ENODEV;
- confdata = &private->conf_data;
- if (!confdata)
+ if (!private->ned || !private->gneq)
return -ENODEV;
memset(uid, 0, sizeof(struct dasd_uid));
- memcpy(uid->vendor, confdata->ned1.HDA_manufacturer,
+ memcpy(uid->vendor, private->ned->HDA_manufacturer,
sizeof(uid->vendor) - 1);
EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
- memcpy(uid->serial, confdata->ned1.HDA_location,
+ memcpy(uid->serial, private->ned->HDA_location,
sizeof(uid->serial) - 1);
EBCASC(uid->serial, sizeof(uid->serial) - 1);
- uid->ssid = confdata->neq.subsystemID;
- uid->real_unit_addr = confdata->ned1.unit_addr;
- if (confdata->ned2.sneq.flags == 0x40 &&
- confdata->ned2.sneq.format == 0x0001) {
- uid->type = confdata->ned2.sneq.sua_flags;
+ uid->ssid = private->gneq->subsystemID;
+ uid->real_unit_addr = private->ned->unit_addr;;
+ if (private->sneq) {
+ uid->type = private->sneq->sua_flags;
if (uid->type == UA_BASE_PAV_ALIAS)
- uid->base_unit_addr = confdata->ned2.sneq.base_unit_addr;
+ uid->base_unit_addr = private->sneq->base_unit_addr;
} else {
uid->type = UA_BASE_DEVICE;
}
+ if (private->vdsneq) {
+ for (count = 0; count < 16; count++) {
+ sprintf(uid->vduit+2*count, "%02x",
+ private->vdsneq->uit[count]);
+ }
+ }
return 0;
}
@@ -623,6 +627,15 @@ static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
ret = -ENOMEM;
goto out_error;
}
+
+ /*
+ * buffer has to start with EBCDIC "V1.0" to show
+ * support for virtual device SNEQ
+ */
+ rcd_buf[0] = 0xE5;
+ rcd_buf[1] = 0xF1;
+ rcd_buf[2] = 0x4B;
+ rcd_buf[3] = 0xF0;
cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm);
if (IS_ERR(cqr)) {
ret = PTR_ERR(cqr);
@@ -646,8 +659,62 @@ out_error:
return ret;
}
-static int
-dasd_eckd_read_conf(struct dasd_device *device)
+static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private)
+{
+
+ struct dasd_sneq *sneq;
+ int i, count;
+
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ count = private->conf_len / sizeof(struct dasd_sneq);
+ sneq = (struct dasd_sneq *)private->conf_data;
+ for (i = 0; i < count; ++i) {
+ if (sneq->flags.identifier == 1 && sneq->format == 1)
+ private->sneq = sneq;
+ else if (sneq->flags.identifier == 1 && sneq->format == 4)
+ private->vdsneq = (struct vd_sneq *)sneq;
+ else if (sneq->flags.identifier == 2)
+ private->gneq = (struct dasd_gneq *)sneq;
+ else if (sneq->flags.identifier == 3 && sneq->res1 == 1)
+ private->ned = (struct dasd_ned *)sneq;
+ sneq++;
+ }
+ if (!private->ned || !private->gneq) {
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ return -EINVAL;
+ }
+ return 0;
+
+};
+
+static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len)
+{
+ struct dasd_gneq *gneq;
+ int i, count, found;
+
+ count = conf_len / sizeof(*gneq);
+ gneq = (struct dasd_gneq *)conf_data;
+ found = 0;
+ for (i = 0; i < count; ++i) {
+ if (gneq->flags.identifier == 2) {
+ found = 1;
+ break;
+ }
+ gneq++;
+ }
+ if (found)
+ return ((char *)gneq)[18] & 0x07;
+ else
+ return 0;
+}
+
+static int dasd_eckd_read_conf(struct dasd_device *device)
{
void *conf_data;
int conf_len, conf_data_saved;
@@ -661,7 +728,6 @@ dasd_eckd_read_conf(struct dasd_device *device)
path_data->opm = ccw_device_get_path_mask(device->cdev);
lpm = 0x80;
conf_data_saved = 0;
-
/* get configuration data per operational path */
for (lpm = 0x80; lpm; lpm>>= 1) {
if (lpm & path_data->opm){
@@ -678,22 +744,20 @@ dasd_eckd_read_conf(struct dasd_device *device)
"data retrieved");
continue; /* no error */
}
- if (conf_len != sizeof(struct dasd_eckd_confdata)) {
- MESSAGE(KERN_WARNING,
- "sizes of configuration data mismatch"
- "%d (read) vs %ld (expected)",
- conf_len,
- sizeof(struct dasd_eckd_confdata));
- kfree(conf_data);
- continue; /* no error */
- }
/* save first valid configuration data */
- if (!conf_data_saved){
- memcpy(&private->conf_data, conf_data,
- sizeof(struct dasd_eckd_confdata));
+ if (!conf_data_saved) {
+ kfree(private->conf_data);
+ private->conf_data = conf_data;
+ private->conf_len = conf_len;
+ if (dasd_eckd_identify_conf_parts(private)) {
+ private->conf_data = NULL;
+ private->conf_len = 0;
+ kfree(conf_data);
+ continue;
+ }
conf_data_saved++;
}
- switch (((char *)conf_data)[242] & 0x07){
+ switch (dasd_eckd_path_access(conf_data, conf_len)) {
case 0x02:
path_data->npm |= lpm;
break;
@@ -701,7 +765,8 @@ dasd_eckd_read_conf(struct dasd_device *device)
path_data->ppm |= lpm;
break;
}
- kfree(conf_data);
+ if (conf_data != private->conf_data)
+ kfree(conf_data);
}
}
return 0;
@@ -952,6 +1017,7 @@ out_err2:
dasd_free_block(device->block);
device->block = NULL;
out_err1:
+ kfree(private->conf_data);
kfree(device->private);
device->private = NULL;
return rc;
@@ -959,7 +1025,17 @@ out_err1:
static void dasd_eckd_uncheck_device(struct dasd_device *device)
{
+ struct dasd_eckd_private *private;
+
+ private = (struct dasd_eckd_private *) device->private;
dasd_alias_disconnect_device_from_lcu(device);
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ private->conf_len = 0;
+ kfree(private->conf_data);
+ private->conf_data = NULL;
}
static struct dasd_ccw_req *
@@ -1746,9 +1822,10 @@ dasd_eckd_fill_info(struct dasd_device * device,
info->characteristics_size = sizeof(struct dasd_eckd_characteristics);
memcpy(info->characteristics, &private->rdc_data,
sizeof(struct dasd_eckd_characteristics));
- info->confdata_size = sizeof(struct dasd_eckd_confdata);
- memcpy(info->configuration_data, &private->conf_data,
- sizeof(struct dasd_eckd_confdata));
+ info->confdata_size = min((unsigned long)private->conf_len,
+ sizeof(info->configuration_data));
+ memcpy(info->configuration_data, private->conf_data,
+ info->confdata_size);
return 0;
}
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index fc2509c939b..4bf0aa5112c 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -231,133 +231,62 @@ struct dasd_eckd_characteristics {
__u8 reserved3[10];
} __attribute__ ((packed));
-struct dasd_eckd_confdata {
+/* elements of the configuration data */
+struct dasd_ned {
struct {
- struct {
- unsigned char identifier:2;
- unsigned char token_id:1;
- unsigned char sno_valid:1;
- unsigned char subst_sno:1;
- unsigned char recNED:1;
- unsigned char emuNED:1;
- unsigned char reserved:1;
- } __attribute__ ((packed)) flags;
- __u8 descriptor;
- __u8 dev_class;
- __u8 reserved;
- unsigned char dev_type[6];
- unsigned char dev_model[3];
- unsigned char HDA_manufacturer[3];
- unsigned char HDA_location[2];
- unsigned char HDA_seqno[12];
- __u8 ID;
- __u8 unit_addr;
- } __attribute__ ((packed)) ned1;
- union {
- struct {
- struct {
- unsigned char identifier:2;
- unsigned char token_id:1;
- unsigned char sno_valid:1;
- unsigned char subst_sno:1;
- unsigned char recNED:1;
- unsigned char emuNED:1;
- unsigned char reserved:1;
- } __attribute__ ((packed)) flags;
- __u8 descriptor;
- __u8 reserved[2];
- unsigned char dev_type[6];
- unsigned char dev_model[3];
- unsigned char DASD_manufacturer[3];
- unsigned char DASD_location[2];
- unsigned char DASD_seqno[12];
- __u16 ID;
- } __attribute__ ((packed)) ned;
- struct {
- unsigned char flags; /* byte 0 */
- unsigned char res1; /* byte 1 */
- __u16 format; /* byte 2-3 */
- unsigned char res2[4]; /* byte 4-7 */
- unsigned char sua_flags; /* byte 8 */
- __u8 base_unit_addr; /* byte 9 */
- unsigned char res3[22]; /* byte 10-31 */
- } __attribute__ ((packed)) sneq;
- } __attribute__ ((packed)) ned2;
+ __u8 identifier:2;
+ __u8 token_id:1;
+ __u8 sno_valid:1;
+ __u8 subst_sno:1;
+ __u8 recNED:1;
+ __u8 emuNED:1;
+ __u8 reserved:1;
+ } __attribute__ ((packed)) flags;
+ __u8 descriptor;
+ __u8 dev_class;
+ __u8 reserved;
+ __u8 dev_type[6];
+ __u8 dev_model[3];
+ __u8 HDA_manufacturer[3];
+ __u8 HDA_location[2];
+ __u8 HDA_seqno[12];
+ __u8 ID;
+ __u8 unit_addr;
+} __attribute__ ((packed));
+
+struct dasd_sneq {
struct {
- struct {
- unsigned char identifier:2;
- unsigned char token_id:1;
- unsigned char sno_valid:1;
- unsigned char subst_sno:1;
- unsigned char recNED:1;
- unsigned char emuNED:1;
- unsigned char reserved:1;
- } __attribute__ ((packed)) flags;
- __u8 descriptor;
- __u8 reserved[2];
- unsigned char cont_type[6];
- unsigned char cont_model[3];
- unsigned char cont_manufacturer[3];
- unsigned char cont_location[2];
- unsigned char cont_seqno[12];
- __u16 ID;
- } __attribute__ ((packed)) ned3;
+ __u8 identifier:2;
+ __u8 reserved:6;
+ } __attribute__ ((packed)) flags;
+ __u8 res1;
+ __u16 format;
+ __u8 res2[4]; /* byte 4- 7 */
+ __u8 sua_flags; /* byte 8 */
+ __u8 base_unit_addr; /* byte 9 */
+ __u8 res3[22]; /* byte 10-31 */
+} __attribute__ ((packed));
+
+struct vd_sneq {
struct {
- struct {
- unsigned char identifier:2;
- unsigned char token_id:1;
- unsigned char sno_valid:1;
- unsigned char subst_sno:1;
- unsigned char recNED:1;
- unsigned char emuNED:1;
- unsigned char reserved:1;
- } __attribute__ ((packed)) flags;
- __u8 descriptor;
- __u8 reserved[2];
- unsigned char cont_type[6];
- unsigned char empty[3];
- unsigned char cont_manufacturer[3];
- unsigned char cont_location[2];
- unsigned char cont_seqno[12];
- __u16 ID;
- } __attribute__ ((packed)) ned4;
- unsigned char ned5[32];
- unsigned char ned6[32];
- unsigned char ned7[32];
+ __u8 identifier:2;
+ __u8 reserved:6;
+ } __attribute__ ((packed)) flags;
+ __u8 res1;
+ __u16 format;
+ __u8 res2[4]; /* byte 4- 7 */
+ __u8 uit[16]; /* byte 8-23 */
+ __u8 res3[8]; /* byte 24-31 */
+} __attribute__ ((packed));
+
+struct dasd_gneq {
struct {
- struct {
- unsigned char identifier:2;
- unsigned char reserved:6;
- } __attribute__ ((packed)) flags;
- __u8 selector;
- __u16 interfaceID;
- __u32 reserved;
- __u16 subsystemID;
- struct {
- unsigned char sp0:1;
- unsigned char sp1:1;
- unsigned char reserved:5;
- unsigned char scluster:1;
- } __attribute__ ((packed)) spathID;
- __u8 unit_address;
- __u8 dev_ID;
- __u8 dev_address;
- __u8 adapterID;
- __u16 link_address;
- struct {
- unsigned char parallel:1;
- unsigned char escon:1;
- unsigned char reserved:1;
- unsigned char ficon:1;
- unsigned char reserved2:4;
- } __attribute__ ((packed)) protocol_type;
- struct {
- unsigned char PID_in_236:1;
- unsigned char reserved:7;
- } __attribute__ ((packed)) format_flags;
- __u8 log_dev_address;
- unsigned char reserved2[12];
- } __attribute__ ((packed)) neq;
+ __u8 identifier:2;
+ __u8 reserved:6;
+ } __attribute__ ((packed)) flags;
+ __u8 reserved[7];
+ __u16 subsystemID;
+ __u8 reserved2[22];
} __attribute__ ((packed));
struct dasd_eckd_path {
@@ -463,7 +392,14 @@ struct alias_pav_group {
struct dasd_eckd_private {
struct dasd_eckd_characteristics rdc_data;
- struct dasd_eckd_confdata conf_data;
+ u8 *conf_data;
+ int conf_len;
+ /* pointers to specific parts in the conf_data */
+ struct dasd_ned *ned;
+ struct dasd_sneq *sneq;
+ struct vd_sneq *vdsneq;
+ struct dasd_gneq *gneq;
+
struct dasd_eckd_path path_data;
struct eckd_count count_area[5];
int init_cqr_status;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index fb2f931cf84..31ecaa4a40e 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -307,6 +307,7 @@ struct dasd_uid {
__u16 ssid;
__u8 real_unit_addr;
__u8 base_unit_addr;
+ char vduit[33];
};
/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 06:37:02 +0000